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Pressing Planet

#18278b
Notes

Pressing Planet (#18278B) is a deep blue with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (232°, 71%, 32%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#18278b
RGB
rgb(24, 39, 139)
HSL
hsl(232, 71%, 32%)
HWB
hwb(232 9% 45%)
OKLCH
oklch(34.1% 0.164 268.4)
P3
color(display-p3 0.1068 0.1514 0.5238)
HSV
hsv(232, 83%, 55%)
LAB
lab(21.98% 32.72 -56.66)
LCH
lch(21.98% 65.42 300.00)
CMYK
cmyk(83%, 72%, 0%, 45%)

Etymology

Pressing
adjective

Latin pressāre, to press repeatedly — present-participle of press. As a color modifier, pressing implies a deep-and-imposing-and-weighty quality where the hue exerts visual force on its substrate. Sits at the deep-and-weighty end of the grid, parallel to crushing with insistent register.

Planet
noun

A celestial body orbiting a star — and the saturated deep blue of Neptune and Uranus, the two ice giants of our outer solar system. Planet color refers to Neptune in long-exposure spacecraft imagery: a saturated, slightly cool deep blue with the optical depth of methane-cloud absorption.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#18278b
Original
#003a8e
Protanopia
#002f89
Deuteranopia
#004356
Tritanopia
#2b2b2b
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon White
12.34:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
1.70:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##18278B
Display P3
Display P3
color(display-p3 0.1068 0.1514 0.5238)
P3 has subtle headroomOKLCH chroma 0.164

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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